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Which process is commonly used to extract essential oils from plant materials?

Cold pressing

Steam distillation

Steam distillation is the process commonly used to extract essential oils from plant materials. This method involves passing steam through plant matter, which vaporizes the essential oils. The vapor is then cooled and condensed back into liquid form, separating the oil from water.

This technique is favored for its effectiveness and the quality of the essential oils it produces. It preserves the delicate characteristics of the plant's aroma and therapeutic properties, making it a preferred method among aromatherapists.

Other methods of extraction, such as cold pressing, are primarily used for citrus peels, while solvent extraction is typically reserved for more delicate flowers, as it can compromise some of the plant's inherent qualities. Fermentation is a different process altogether and is not employed for essential oil extraction, but rather for producing alcohol or vinegar from organic materials.

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Solvent extraction

Fermentation

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